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Annotated Checklist Of The Flowering Plants Of South Padre Island, Texas, Robert I. Lonard, Frank W. Judd, Sammie L. Sides

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

This study catalogues the flowering plants of South Padre Island, Texas. A total of 207 species in 47 families is listed. The abundance and ecological distribution of each taxon are noted. Comparisons are made with the flora of Mustang Island, Texas. Ninety-three species, 96 genera and 36 families are common to both islands. Three families, Compositae, Gramineae and Leguminosae, contain large shares of the total number of species on both islands. Apparently, much of the floral diversity is due to the presence of a large number of species that are represented by small populations.

Synergistic Effects Of Wavelengths Of Ultraviolet Radiation On Capacity In A Mammalian Cell-Virus System In Vitro, Bobby Cobb

Masters Theses & Specialist Projects

The synergistic effect between each of two minor contaminating UV wavelengths has been studied. The TC-7 host cell-capacity system was used. The macromolecular damage induced in monolayers of cell cultures as the result of exposure to UV radiation was measured by determining the ability of irradiated cells to support the replication of Herpes simplex virus. The macromolecule involved has been shown to be DNA and the damage is probably due to the formation of thymine dimers plus some undefined chromosphore associated with the DNA of the cell.

Preliminary experiments showed that low exposures of germicidal radiation are less effective in …

Kentucky Warbler (Vol. 54, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

The Effect Of Parental Bone Marrow & Spleen Cells In The Induction Of The Graft-Versus-Host Reaction, Ronald Grane

Masters Theses & Specialist Projects

Variously aged (C57BL X C3H)F₁ hybrid mice were used as recipients in experiments to determine if spleen or bone marrow cells from normal C57BL or C3H donors, spleen or bone marrow cells from C57BL donors previously treated with cortisone, or C57BL bone marrow cells previously incubated with serum from X-irradiated C57BL mice could induce a graft-versus-host reaction (GVHR).

The mice were assayed for GVHR by mortality or splenomegaly as detected by the discriminant spleen assay developed by Simonsen. Results show that spleen cells from normal C57BL, normal C3H, or cortisone-treated C57BL mice are capable of inducing a GVHR in …

Forage Quality Evaluations Of Twelve Grasses In Relation To Season For Grazing, L. C. Newell, W. J. Moline

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A study of forage quality in relation to seasonal yield of important perennial forage grasses was initiated to provide information and to promote a better understanding of their best use for grazing. This information should be particularly valuable in planning seasonal use of pure stands or mixtures of grasses.

The Role Of Seed Morphology In Identification Of Archeological Remains, Paul J. Knight

Biology ETDs

In the last century, archeologists working in the southwestern United States and in other localities around the world have uncovered a sufficient quantity and diversity of archeological-botanical materials to warrant serious investigation of these materials as a source of data on the subsistence of prehistoric populations.

The Distribution And Zoogeography Of The Mammals Of Sonora, Mexico, William Caire

Biology ETDs

A distributional and zoogeographical analysis based on published records and approximately 13,000 specimens is provided for the 122 naturally occurring mammalian species in Sonora, Mexico. Twenty-eight species of unverified occurrence which could be present in Sonora are discussed. Domesticated mammals are listed and introduced species are briefly discussed. Descriptions of the topography, climate, vegetation, and hydrological features of Sonora are included. Dichotomous keys provide for the identification of Sonoran mammals to the levels of order, family, and species. Species accounts include the following: scientific and common names, additional identification remarks, general distributional discussions, various ecological and biological remarks, records of …

An Ultrastructural Study Of Intramuscular Melanocytes In Pet/Wmr Mice, Charles August Gomer

Master's Theses

An examination of the lateral head of the gastrocnemius of the PET/Wn!.r mouse was made with an electron microscope. Cells of the perimysium and endomysium were described and the relationship of these cells to muscle cells was characterized. The relationship between melanocytes and muscle cells found in this strain was the major focus. Melanocytes were seen to be present in the perimysium and endomysium with the greatest concentration in the endomysium. Melanocytes of the perimysium appeared segregated from the adjacent tissue by fibroblasts,which surround ed the melanocytes with their cytoplasmic processes, a well as by collagen fibers. Melanocytes of the …

The Quality Of Storm Runoff From Different Kinds Of Land Surfaces In The Drainage Basin Of Westhampton Lake, Richmond, Virginia, Margaret Emil Coppedge

Master's Theses

Samples of runoff were collected during storms from four different areas within the drainage basin of Westhampton Lake, Richmond, Virginia, between October, 1977, and January, 1978. The areas were a residential area, concrete street gutter, asphalt parking lot, and broadleaf forest.

The samples were analyzed for pH, levels of reactive phosphate, nitrate, and turbidity, and their effects on the growth of algae from Westhampton Lake.

The pH of runoff from the residential area, gutter, and forest usually ranged between 6-7 and the parking lot usually ranged between 4-5. Levels of turbidity varied considerably between storms and areas. Runoff from the …

Lactate Dehydrogenase Isozyme Patterns From Five Species Of Snakes : Comparison Of Rattlesnake Vibratory Muscle With Body Epaxial Muscle, Cecil Bernard Cross

Master's Theses

Lactate dehydrogenase (LDH) isozyme patterns of seven tissues in each of five species of snakes are described from their polyacrylamide gel electrophoretic characteristics. The tissues examined included vibratory tail muscle, non­ vibratory tail muscle, body epaxial muscle, heart muscle, whole blood, liver and kidney. The species of snakes included Crotalus adamanteus, C. h. horridus, Agkistrodon piscivorus and Sistrurus miliarius barbouri from the family Crotalidae and Natrix taxispilota from the family Colubridae. These snakes show a decreasing continuum of tail vibratory activity, respectively, to N. taxispilota, which has a non­vibratory tail muscle.

Crotalus adamanteus, C. h. horridus and A. piscivorus have …

Experimental Transmission Of Sarcocystis From Icterid Birds To Sparrows And Canaries By Sporocysts From The Opossum, Edith D. Box, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cowbirds (Molothrus ater) and grackles (Cassidix mexicanus) infected with muscle cysts of Sarcocystis were fed to opposums (Didelphis virginiana) and fecal sporocysts from the latter were given to sparrows (Passer domesticus, Family Ploceidae), canaries (Serinus canarius, Family Fringillidae) and ducks (Anas platyrhynchos, Family Anatidae). Asexual parasites were found in the endothelium of sparrows and canaries but not in ducks. When birds were kept 10 weeks or more after infection, muscle cysts were found grossly and microscopically in the majority of sparrows, and in 1 canary, but not in …

A Survey Of Nine Common Laboratory Compounds As Causative Agents Of Ciliostasis In Tracheal Explants From Mice, Josie Marshall Fletcher

Masters Theses

No abstract provided.

Mammalian Succession On Lake Michigan Sand Dunes, John M. Olson

Masters Theses

No abstract provided.

Zinc Uptake In Loblolly Pine Seedlings, Victor Zillmer

Electronic Theses and Dissertations

Zinc concentrations in the root, terminal growth, stem, and needles of loblolly pine (Pinus taeda L.) were measured in 72 seedlings grown in washed sand, fertilized with Zn(N03)2. Zinc treatment periods were early spring, late spring, and summer. Zinc uptake was the greatest in early spring. Zinc nitrate fertilizer and remaining soil zinc at treatments end had no effect on mycorrhizae, height, or diameter growth. Linear and multiple regressions were derived using residual soil zinc and treatment zinc that can predict zinc concentrations in different plant parts that have r values from .7440 to .8170. Linear regressions for the prediction …

Germination, Respiration And Photosynthesis In Seeds Of Dwarf Mistletoe (Arceuthobium), Steven Wayne Gustafson

Dissertations and Theses

Germination, respiration, and photosynthesis in seeds of dwarf mistletoe (Arceuthobium) were studied. The effects of 1 hour soakings of seeds in aqueous solutions of 1, 2, or 3% H₂O₂ or 1, 2, 3, 4, or 5% Chlorox on germination of seeds were tested. Germination rates for seeds from three consecutive years (1975-1977) were obtained. Germination rates varied widely. This variance transcended subtle changes in treatment. Pretreatment of seeds with Chlorox resulted in significantly lower germination rates than those of the control. Chlorophyll concentrations were determined for seeds and aerial shoot tissue of four species. Seeds …

92nd Annual Report Of The Nebraska Agricultural Experiment Station

Agricultural Research Division: News and Annual Reports

Contents:
Foreword
Administration and Staff
Nebraska Agricultural Experiment Station
Research Projects
Experiment Station Publications
Publications of the Staff
Report of Income and Expenditures

Clustering Of Phenotypic Variables And Construction Of An Identification Scheme For Human Isolates Of Haemophilus, Lynne Alice Johnson

Biology ETDs

The taxonomy of the genus Haemophilus has been in a state of confusion for many years. As a result, laboratory identification of haemophili has been difficult, if not impossible. Due to the considerable pathogenicity of some members of the genus, it was felt that an accurate method of identification of those organisms was needed. This study has attempted to create a practical identification scheme for haemophili isolated in the clinical laboratory. A collection of 220 isolates from clinical laboratories was subjected to 35 biochemical and physiological tests and the data posted to a random matrix. The 7700 bits (220 X …

Effects Of Inorganic Ions On The Catalytic Activity Of Pig Liver Phosphofructokinase, Lawrence Gregory Foe

Biology ETDs

The effects of inorganic ions on the catalytic activity of pig liver phosphofructokinase were investigated. High concentrations of monovalent anions inhibit the enzyme by decreasing max with little change in the Hill coefficient. The efficiency of inhibition follows the

series NO3- < Cl- < ClO3- = Br- < I- < SCN-, which is similar to the classical Hofmeister series. Low concentrations (< 2 mM) of the divalent anions Pi, sO4 2-, s2O3 2- SO32- , and MoO42- all activate the enzyme by changing the kinetics from sigmoidal to hyperbolic, with no change in V max . However, B4o72- has no effect. The apparent dissociation constants of the activating anions for the enzyme were calculated from activation curves for the anions at 0.5mM ATP and 1.0m MF6p.The activation curve for so4-2 is sigmoidal; the activation curves for the other activating anions are hyperbolic. The monovalent cations K+, NH4+ , and Rb+ activate the enzyme by increasing V max without greatly affecting the Hill coefficient.

However, the [S}0.5 for F6P is decreased by these cations to an extent directly proportional to their ionic volumes.

The monovalent cations Li + , Na+ , and C s + have no activating effect; instead, high concentrations of these cations inhibit the enzyme in a manner similar to the monovalent anions. The efficiency of inhibition follows the series …

Agricultural Experiment Station News July 1978

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – June 1978
BULLETINS PRINTED

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

A Handful of Seed [p] 3
Hardiness Research [p] 8
Saving a Shelterbelt [p] 9
The Changing Farm Picture [p] 13
Rail Service [p] 15
SxA Calves [p] 18
Feed Mill [p] 20

Farm, Ranch And Home Quarterly Institute Of Agriculture And Natural Resources, University Of Nebraska- Lincoln

Farm, Ranch and Home Quarterly

In this issue:

From the Vice Chancellor ............................... 2

Good Management Controls Feedlot Flies................. 3

Tractor Day-Something for Everyone...................... 5

How Not to Hit Your Children ........................... 7

Cottonwoods for Nebraska.......................... 9

Agricultural job Openings Forecast ........................ 11

Range judging-An Outdoor Classroom ................... 12

To Expand or Not to Expand? ............................ 14

Dry Bean Disease Plagues Farmers ........................ 16

Pest Center Serves Growers, Gardeners .................... 19

joint Venture Beef Fabrication ............................ 21

Rural Services: Worth the Cost? .......................... 23

Membrane Potentials And Resistances Of Giant Mitochondria: Metabolic Dependence And The Effects Of Valinomycin, Bruce L. Maloff, Stylianos P. Scordilis, Christopher Reynolds, Henry Tedeschi

Biological Sciences: Faculty Publications

The membrane potentials and resistances of giant mitochondria from mice fed cuprizone have been studied. They were found to correspond approx. 10-20 mV, positive inside, and 2 M omega, respectively. These properties were found to be independent of the metabolic state. The microelectrodes were in the inner mitochondrial space since (a) the potentials in the presence of valinomycin depended on the K+ concentration of the medium and magnitude of the K+ diffusion potentials was consistent with the presence of a high internal concentration of K+, (b) almost identical results were obtained with mitochondria from which the external membrane had been …

Mercury, Copper, And Zinc In Selected Ichthyofauna Of Lower Chesapeake Bay And Hampton Roads, Virginia, W. Bruce Aitenhead

OES Theses and Dissertations

Anchovys, croaker, spat, summer flounder and hogchokers were collected monthly to seasonally from November 1972 to October 1973 at three locations in the southern Chesapeake Bay region of Virginia.

The concentrations of mercury, copper and zinc were determined by atomic absorption spectrophotometry in whole fishes. Metal concentration varied with species and location. Anchovys had the highest mean concentrations of mercury and zinc while hog- chokers had the highest mean copper concentration. Mercury levels exceeding O.5 ppm were observed in species from all three loca- tions, but maximum heavy metal concentrations per species were highest in Craney Island fishes.

Temporal variations …

"Toxic Chemicals In The Environment", William E. Cooper

Special Collections: Oregon Public Speakers

Presented and recorded with Arbib, M. A., "Environmental Simulation and Long-Term Planning."

The Kinetics Of Solvent Reorientation In Hydroxylated Solvents From The Exciting-Wavelength Dependence Of Chromophore Emission Spectra, John Milton, Robert M. Purkey, William C. Galley

WM Keck Science Faculty Papers

The disappearance of the exciting-wavelength dependence of the phosphorescence spectra of polar, aromatic chromophores in supercooled glycol–water mixtures is utilized to monitor the kinetics of solvent reorientation. Reorientation times in the nanosecond to second range are obtained for (3:2 v/v) glycerol–water and (1:1 v/v) ethylene glycol–water at 140–240 °K. The results suggest that the process is one involving a cluster of solvent molecules and in which the chromophore plays a relatively passive role. Steady-state data and direct measurements of phosphorescence shifts as a function of time indicate that the solvent reorientation process is nonexponential in nature. The decay function derived …

Alpine Vegetation Of Steens Mountain, Paul Collins

Dissertations and Theses

A determination was made that the summit of Steens Mountain is an alpine tundra. The assessment was based on floristics, vegetation and community structure, environmental parameters, and geomorphological criteria. Microhabitats of Oxyria digyna at low elevations were found to approximate alpine conditions.

Bulletin No. 23: Plants And Animals Of The Estuary, William A. Niering, Paul E. Fell, Sally L. Taylor, Martine Villalard-Bohnsack, Nancy C. Olmstead

Bulletins

Descriptions and illustrations of over 70 estuarine species.

End Matter, Vol. 20 No. 5

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Mammals Of The Smithsonian Venezuelan Project, Charles O. Handley Jr.

Brigham Young University Science Bulletin, Biological Series

Mammals and their ectoparasites were collected in all parts of Venezuela between 1965 and 1968 by the Smithsonian Venezuelan Project. Ecological and geographical data are summarized here for 38,213 specimens of 270 species of mammals obtained by the project.

Agricultural Experiment Station News June 1978

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
NEW LEADERSHIP - HORTICULTURE AND WRRI
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – May 1978
BULLETINS PRINTED